Improvement in coiled-tube rotary condensers



P. S. FORBES. Coiled Tube Rotary Condenser.

Patented Dec. 18, 1877.

WITNESSES BY We ATTORNEYS.

MPEIERS PHOTO-LITHDGRAPHER WASNINGTON 0 c UNITED STATES PATENT OEEIoE.

PAUL S. FORBES, OF NEW YORK, N. Y.

IMPROVEMENT IN COlLED-TUBE ROTARY GONDENSERS.

Specification forming part of Letters Patent No. 198,288, dated December18, 1877; application filed November 23, 1877.

To all whom it may concern:

Be it known that 1, PAUL S. FORBES, of the city, county, and State ofNew York, have invented a new and useful Improvement in Similar lettersof reference indicate corresponding parts.

The object of this invention is to furnish an improved device forcondensing the exhauststeam of the engines of steam-launches,steamyachts, and other vessels, which shall be simple in construction,inexpensive in its applica tion, and eifective in use.

The invention consists in an improved rotary condenser, made of a tubecoiled into wheel form, and having its ends projecting at the centers ofits opposite sides, to adapt it to be placed and revolved in a well in avessel, for condensing the exhaust-steam of the engine, as hereinafterfully described.

A represents a well, similar to a centerboard well, except that it isplaced at the side of the keel. B is a wheel,'for1ned of one or morecoils of a tube, the ends of which project at the centers of theopposite sides, to serve as journals for the said wheel, and whichrevolve in bearings in the sides of the well A, one of I said endsreceiving the steam, and the other discharging the water ofcondensation.

To the outer surface of the wheel B are attached cross-bars b, to keepthe said coils in place, and which may also serve as paddles forrevolving said wheel by the action of the water as the vessel movesforward; or, if desired, the wheel B may be revolved by power applied toits journals from an engine.

By this construction the wheel B, being constantly revolved in coldwater, will be kept cool, so that the steam will be condensed rapidlyand thoroughly.

Having thus described my invention, I claim as new and desire to secureby Letters Patent An improved rotary condenser, made of a tube coiledinto wheel form, and having its ends projecting at the centers of itsopposite sides, to adapt it to be placed and revolved in a well in avessel, for condensing the exhauststearn of the engine, substantially asherein shown and described.

PAUL S. FORBES.

Witnesses:

JAMES T. GRAHAM, O. SEDGWICK.

